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36 lines
845 B
Python
36 lines
845 B
Python
import time
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def fact_rec(n):
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if n < 1 or n >= 1000:
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return "Error"
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if n <= 1:
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return 1
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return n * fact_rec(n - 1)
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def fact_it(n):
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if n < 1 or n >= 1000:
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return "Error"
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result = 1
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for i in range(2, n + 1):
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result *= i
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return result
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if __name__ == '__main__':
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n = 999
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max_it = 0
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for _ in range(1000):
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start_1 = time.time()
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fact_it(n)
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it_time = time.time() - start_1
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if max_it < it_time: max_it = it_time
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max_rec = 0
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for _ in range(1000):
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start_2 = time.time()
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fact_rec(n)
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rec_time = time.time() - start_2
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if max_rec < rec_time: max_rec = rec_time
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print(f"Итеративная: {max_it}с") # 0.001142740249633789
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print(f"Рекурсивная: {max_rec}с") # 0.0011646747589111328
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